Malicious PDF — malware analysis report

Static analysis result for SHA-256 e24b38e132ae5dc8…

MALICIOUS

PDF

59.1 KB Created: 2020-08-22 21:29:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b2b7ac9a1f53d7fc7d496a73a29f546 SHA-1: bd0f7231c2dafc56412a28328ab4ba72c83ebbe5 SHA-256: e24b38e132ae5dc8da5db49db7c51cc15a11ceb4603d27a32f27099ca7809d25
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic indicating it links to a known malicious redirector, specifically `https://ttraff.ru/pify?keyword=osrs+clue+scroll+guide+coordinates`. The document body, though heavily obfuscated, contains text related to 'osrs clue scroll guide coordinates', suggesting a lure. The file also contains a PDF link farm heuristic, pointing to numerous external PDFs, with the first listed being `https://cdn.shopify.com/s/files/1/0432/7270/0057/files/wokovetupegok.pdf`.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=osrs+clue+scroll+guide+coordinates
    • http://figexez.childrenspiazzapeabody.com/uploads/1/3/1/4/131453540/nasawoler.pdf
    • http://files.ibbeautiful.org/uploads/1/3/2/6/132682802/1fb657faf9bf8e4.pdf
    • http://files.bioscienceessentials2brn.com/uploads/1/3/1/6/131637055/sazotinubujuwifov.pdf
    • https://cdn.shopify.com/s/files/1/0432/7270/0057/files/wokovetupegok.pdf
    • https://cdn.shopify.com/s/files/1/0432/3681/9104/files/46224541556.pdf
    • https://cdn.shopify.com/s/files/1/0433/4164/3928/files/pneumococcal_vaccine_schedule_adults.pdf
    • https://cdn.shopify.com/s/files/1/0434/3591/7473/files/8th_grade_math_equations.pdf
    • https://cdn.shopify.com/s/files/1/0437/2532/4439/files/amoxicilina_ems_bula.pdf
    • https://cdn.shopify.com/s/files/1/0429/3863/0300/files/eurovan_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/7939/1637/files/edscratch_teacher_s_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/3672/8734/files/74085857785.pdf
    • https://cdn.shopify.com/s/files/1/0439/5171/8558/files/moviesda_tamil_dubbed_hollywood_movies.pdf
    • https://cdn.shopify.com/s/files/1/0430/4214/4407/files/70871601171.pdf
    • https://cdn.shopify.com/s/files/1/0428/9118/2243/files/42304048775.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aac0.bin
6b0e80d4a657a4733310df874cf63a15d81b1e5a2387d12f584a536a91f6fb45		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAAC0 5132 bytes
font_01_sfnt_off0000bc3e.bin
e6adf58e5770bdeed477c713b4cabb7f275a97d40478513bece73144be70f93a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC3E 10192 bytes

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